Spark Arrestor Installation in Alamo Heights, TX

NFPA 211 is specific: the arrestor's openings must not allow a sphere larger than 1/2 inch to pass, and must not block a sphere smaller than 3/8 inch. That window keeps the screen tight enough to catch embers while still letting the chimney breathe. A screen with oversized holes lets sparks escape onto the roof; one that's too fine clogs with soot and chokes draft. We install arrestors built to that 3/8-to-1/2-inch standard rather than generic hardware cloth.

Only if it's the wrong screen or it's left dirty. NFPA 211 requires the arrestor to have a net free area at least three times the chimney outlet, specifically so it doesn't strangle the flow of gases. A properly sized arrestor maintains draft; the real risk is neglect — soot and creosote accumulating on the mesh can blind it over a season. We size to that 3x rule and recommend the screen be checked at your annual inspection so it stays open.

For chimneys serving solid-fuel appliances, a spark arrestor is required under NFPA 211, and many local fire codes mandate them outright — particularly in wildfire-prone and wildland-urban-interface areas where an escaping ember can ignite a roof or brush. Beyond code, it's simply sound fire practice. We install corrosion- and heat-resistant arrestors that meet the material and opening requirements, because a rusted or undersized screen defeats the purpose it was put there for.

Yes, and it usually should be. Many quality caps integrate a code-compliant arrestor screen, so a single component sheds rain off the flue, blocks animals, and arrests sparks at once. The key is that the integrated screen still meets the 3/8-to-1/2-inch opening rule and the 3x net-free-area requirement — some decorative caps don't. We verify the arrestor specification on any combined cap so you get genuine ember protection, not just a lid.

Yes — our crews cover Alamo Heights's 1 ZIP code across Bexar County, including Olmos Park line, Terrell Hills, Lower Alamo Heights, plus the surrounding communities.

We offer same-week scheduling across Alamo Heights, booked by a real person in under two minutes, 7 AM to midnight every day.

Alamo Heights is defined by its early-20th-century masonry homes -- some of the oldest chimney stock our certified inspectors handle anywhere in the area -- where original clay-tile liners and unlined flues are common and rarely meet current code. Near Terrell Hills and the Olmos Park line, the work that dominates is Level 2 video inspection of these historic systems, documenting cracked tile, deteriorated mortar, and creosote in flues that have served wood fires for generations. We assess every finding against NFPA 211 before any unit is cleared. Spark Arrestor Installation is part of keeping that local housing stock safe, efficient, and up to code.